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Viper Is a Package for Emacs Rebels

3. Customization

Customization can be done in 2 ways.

• Elisp code in a `.viper' file in your home directory. Viper loads `.viper' just before it does the binding for mode hooks. This is the recommended method.
• Elisp code in your `.emacs' file before and after the (require 'viper) line. This method is not recommended, unless you know what you are doing. Only two variables, viper-mode and viper-custom-file-name are supposed to be customized in `.emacs', prior to loading Viper.

Most of Viper's behavior can be customized via the interactive Emacs user interface. Choose "Customize" from the menubar, click on "Editing", then on "Emulations". The customization widget is self-explanatory. Once you are satisfied with your changes, save them into a file and then include the contents of that file in the Viper customization repository, `.viper' (except for viper-mode and viper-custom-file-name, which are supposed to go into .emacs).

Some advanced customization cannot be accomplished this way, however, and has to be done in Emacs Lisp. For the common cases, examples are provided that you can use directly.

3.1 Rudimentary Changes		Simple constant definitions.
3.2 Key Bindings		Enabling Emacs Keys, Rebinding keys, etc.
3.2.1 Packages that Change Keymaps		How to deal with such beasts.
3.3 Viper Specials		Special Viper commands.
3.4 Vi Macros		How to do Vi style macros.